The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 16, 2013
Filed:
Mar. 17, 2010
Makoto Higashiyama, Kanagawa, JP;
Yoshiaki Kawai, Kanagawa, JP;
Shingo Nishizaki, Kanagawa, JP;
Tomohide Kondoh, Kanagawa, JP;
Masashi Suzuki, Saitama, JP;
Makoto Higashiyama, Kanagawa, JP;
Yoshiaki Kawai, Kanagawa, JP;
Shingo Nishizaki, Kanagawa, JP;
Tomohide Kondoh, Kanagawa, JP;
Masashi Suzuki, Saitama, JP;
Ricoh Company, Limited, Tokyo, JP;
Abstract
An image forming apparatus includes a skew correcting unit that performs skew correction by dividing an input image that has undergone a halftone process into image data in a predetermined skew correction area in a main scanning direction and by shifting the image data in the skew correction area in a sub-scanning direction; an edge detecting unit that detects whether a pixel at a division position is an edge pixel based on concentrations of a set of pixels including the pixel at the division position; a correction area determining unit that, if detected that the pixel at the division position is the edge pixel, determines a correction area that is an area of pixels including the edge pixel to be subjected to concentration correction within the skew correction area; and an edge correcting unit that corrects concentrations of the pixels within the correction area.